linux-kernel - Re: [PATCH] xen-netfront: Rework the fix for Rx stall during OOM and network stress

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Message-ID: <e81a8a0a-5364-433b-3c9b-93d6b1680a89@oracle.com>
Date:   Wed, 8 Feb 2017 10:08:19 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Vineeth Remanan Pillai <vineethp@...zon.com>, jgross@...e.com,
        xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kamatam@...zon.com, aliguori@...zon.com, guruanb@...zon.com
Subject: Re: [PATCH] xen-netfront: Rework the fix for Rx stall during OOM and
 network stress

On 02/07/2017 01:59 PM, Vineeth Remanan Pillai wrote:
> The commit 90c311b0eeea ("xen-netfront: Fix Rx stall during network
> stress and OOM") caused the refill timer to be triggerred almost on
> all invocations of xennet_alloc_rx_buffers for certain workloads.
> This reworks the fix by reverting to the old behaviour and taking into
> consideration the skb allocation failure. Refill timer is now triggered
> on insufficient requests or skb allocation failure.
>
> Signed-off-by: Vineeth Remanan Pillai <vineethp@...zon.com>
> Fixes: 90c311b0eeea (xen-netfront: Fix Rx stall during network stress and OOM)
> Reported-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>